Theoretically, the BEC in the presence of random impurity potential has been studied by Huang [1]} and Giorgini et al [2]} before the experimental observation of BEC.
The study of BEC in the presence of speckle potential [3]}, [4]}, [5]}, [6]}, [7]}, [8]} is very popular as the potential is controllable and random in nature. Besides the speckle potential different kind of disordered BEC has been studied, such as Gaussian random potential [9]}, [10]}, [11]}, [12]}, [13]}, Lorentzian potential[14]}.
